User Manual

Overview

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If you have 8-bit (or Narrow) SCSI devices, they must use SCSI

IDs 0, 1, 2, 3, 4, 5, or 6. SCSI ID 0 is recommended for the first

SCSI hard disk drive.

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If you are booting your computer from a SCSI hard disk drive

connected to the Adaptec SCSI Card 29160N, the Boot Target

ID setting in the SCSI

Select

utility must correspond to the SCSI

ID of the device from which you are booting. By default, the

Boot Target ID is set to

. We recommend that you do not

change this setting.

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In Windows

95/98, you can use the Device Manager to deter-

mine which SCSI ID is assigned to each installed SCSI device.

Terminating the SCSI Bus

To ensure reliable communication on the SCSI bus, the ends of the

SCSI bus must be properly terminated. This is accomplished when

the device at the end of each cable, or the end of the cable itself, has a

terminator installed (or enabled). Terminators must be removed, or

termination must be disabled, on devices between the ends of each

cable.

Since the method for terminating a SCSI device can vary widely,

refer to the device’s documentation for instructions on how to

enable or disable termination. Here are some general guidelines for

termination:

■

Internal Ultra160 SCSI devices come from the factory with ter-

mination disabled and cannot be changed. Proper termination

for internal Ultra160 SCSI devices is provided by the built-in

terminator at the end of the Ultra160 SCSI internal SCSI cable.

■

Termination on non-Ultra160 internal SCSI devices usually is

controlled by manually setting a jumper or a switch on the

device, or by physically removing or installing one or more

resistor modules on the device.

■

Termination on external SCSI devices usually is controlled by

installing or removing a SCSI terminator. On some external

devices, termination is controlled by setting a switch on the

back of the SCSI device.